1 |
greg |
2.1 |
/* Copyright (c) 1994 Regents of the University of California */ |
2 |
|
|
|
3 |
|
|
#ifndef lint |
4 |
|
|
static char SCCSid[] = "$SunId$ LBL"; |
5 |
|
|
#endif |
6 |
|
|
|
7 |
|
|
/* |
8 |
|
|
* Convert MGF (Materials and Geometry Format) to Radiance |
9 |
|
|
*/ |
10 |
|
|
|
11 |
|
|
#include <stdio.h> |
12 |
|
|
#include <math.h> |
13 |
|
|
#include <string.h> |
14 |
|
|
#include "mgflib/parser.h" |
15 |
|
|
#include "color.h" |
16 |
|
|
#include "tmesh.h" |
17 |
|
|
|
18 |
|
|
#define putv(v) printf("%18.12g %18.12g %18.12g\n",(v)[0],(v)[1],(v)[2]) |
19 |
|
|
|
20 |
greg |
2.2 |
double glowdist = FHUGE; /* glow test distance */ |
21 |
greg |
2.1 |
|
22 |
|
|
double emult = 1.; /* emmitter multiplier */ |
23 |
|
|
|
24 |
|
|
int r_comment(), r_cone(), r_cyl(), r_face(), r_ies(), r_ring(), r_sph(); |
25 |
|
|
char *material(), *object(), *addarg(); |
26 |
|
|
|
27 |
|
|
|
28 |
|
|
main(argc, argv) /* convert files to stdout */ |
29 |
|
|
int argc; |
30 |
|
|
char *argv[]; |
31 |
|
|
{ |
32 |
|
|
int i, rv; |
33 |
|
|
/* initialize dispatch table */ |
34 |
|
|
mg_ehand[MG_E_COMMENT] = r_comment; |
35 |
|
|
mg_ehand[MG_E_COLOR] = c_hcolor; |
36 |
|
|
mg_ehand[MG_E_CONE] = r_cone; |
37 |
greg |
2.4 |
mg_ehand[MG_E_CMIX] = c_hcolor; |
38 |
|
|
mg_ehand[MG_E_CSPEC] = c_hcolor; |
39 |
greg |
2.1 |
mg_ehand[MG_E_CXY] = c_hcolor; |
40 |
|
|
mg_ehand[MG_E_CYL] = r_cyl; |
41 |
|
|
mg_ehand[MG_E_ED] = c_hmaterial; |
42 |
|
|
mg_ehand[MG_E_FACE] = r_face; |
43 |
|
|
mg_ehand[MG_E_IES] = r_ies; |
44 |
|
|
mg_ehand[MG_E_MATERIAL] = c_hmaterial; |
45 |
|
|
mg_ehand[MG_E_NORMAL] = c_hvertex; |
46 |
|
|
mg_ehand[MG_E_OBJECT] = obj_handler; |
47 |
|
|
mg_ehand[MG_E_POINT] = c_hvertex; |
48 |
|
|
mg_ehand[MG_E_RD] = c_hmaterial; |
49 |
|
|
mg_ehand[MG_E_RING] = r_ring; |
50 |
|
|
mg_ehand[MG_E_RS] = c_hmaterial; |
51 |
greg |
2.6 |
mg_ehand[MG_E_SIDES] = c_hmaterial; |
52 |
greg |
2.1 |
mg_ehand[MG_E_SPH] = r_sph; |
53 |
|
|
mg_ehand[MG_E_TD] = c_hmaterial; |
54 |
|
|
mg_ehand[MG_E_TS] = c_hmaterial; |
55 |
|
|
mg_ehand[MG_E_VERTEX] = c_hvertex; |
56 |
|
|
mg_ehand[MG_E_XF] = xf_handler; |
57 |
|
|
mg_init(); /* initialize the parser */ |
58 |
|
|
/* get options & print header */ |
59 |
|
|
printf("## %s", argv[0]); |
60 |
|
|
for (i = 1; i < argc && argv[i][0] == '-'; i++) { |
61 |
|
|
printf(" %s", argv[i]); |
62 |
|
|
switch (argv[i][1]) { |
63 |
|
|
case 'g': /* glow distance (meters) */ |
64 |
|
|
if (argv[i][2] || badarg(argc-i, argv+i, "f")) |
65 |
|
|
goto userr; |
66 |
|
|
glowdist = atof(argv[++i]); |
67 |
|
|
printf(" %s", argv[i]); |
68 |
|
|
break; |
69 |
|
|
case 'e': /* emitter multiplier */ |
70 |
|
|
if (argv[i][2] || badarg(argc-i, argv+i, "f")) |
71 |
|
|
goto userr; |
72 |
|
|
emult = atof(argv[++i]); |
73 |
|
|
printf(" %s", argv[i]); |
74 |
|
|
break; |
75 |
|
|
default: |
76 |
|
|
goto userr; |
77 |
|
|
} |
78 |
|
|
} |
79 |
|
|
putchar('\n'); |
80 |
|
|
if (i == argc) { /* convert stdin */ |
81 |
|
|
if ((rv = mg_load(NULL)) != MG_OK) |
82 |
|
|
exit(1); |
83 |
|
|
} else /* convert each file */ |
84 |
|
|
for ( ; i < argc; i++) { |
85 |
|
|
printf("## %s %s ##############################\n", |
86 |
|
|
argv[0], argv[i]); |
87 |
|
|
if ((rv = mg_load(argv[i])) != MG_OK) |
88 |
|
|
exit(1); |
89 |
|
|
} |
90 |
|
|
exit(0); |
91 |
|
|
userr: |
92 |
|
|
fprintf(stderr, "Usage: %s [-g dist][-m mult] [file.mgf] ..\n", |
93 |
|
|
argv[0]); |
94 |
|
|
exit(1); |
95 |
|
|
} |
96 |
|
|
|
97 |
|
|
|
98 |
|
|
int |
99 |
|
|
r_comment(ac, av) /* repeat a comment verbatim */ |
100 |
|
|
register int ac; |
101 |
|
|
register char **av; |
102 |
|
|
{ |
103 |
greg |
2.7 |
putchar('#'); /* use Radiance comment character */ |
104 |
greg |
2.1 |
while (--ac) { |
105 |
|
|
putchar(' '); |
106 |
|
|
fputs(*++av, stdout); |
107 |
|
|
} |
108 |
|
|
putchar('\n'); |
109 |
|
|
return(MG_OK); |
110 |
|
|
} |
111 |
|
|
|
112 |
|
|
|
113 |
|
|
int |
114 |
|
|
r_cone(ac, av) /* put out a cone */ |
115 |
|
|
int ac; |
116 |
|
|
char **av; |
117 |
|
|
{ |
118 |
|
|
static int ncones; |
119 |
|
|
char *mat; |
120 |
|
|
double r1, r2; |
121 |
|
|
C_VERTEX *cv1, *cv2; |
122 |
|
|
FVECT p1, p2; |
123 |
|
|
int inv; |
124 |
|
|
|
125 |
|
|
if (ac != 5) |
126 |
|
|
return(MG_EARGC); |
127 |
|
|
if (!isflt(av[2]) || !isflt(av[4])) |
128 |
|
|
return(MG_ETYPE); |
129 |
|
|
if ((cv1 = c_getvert(av[1])) == NULL || |
130 |
|
|
(cv2 = c_getvert(av[3])) == NULL) |
131 |
|
|
return(MG_EUNDEF); |
132 |
|
|
xf_xfmpoint(p1, cv1->p); |
133 |
|
|
xf_xfmpoint(p2, cv2->p); |
134 |
|
|
r1 = xf_scale(atof(av[2])); |
135 |
|
|
r2 = xf_scale(atof(av[4])); |
136 |
|
|
inv = r1 < 0.; |
137 |
|
|
if (r1 == 0.) { |
138 |
|
|
if (r2 == 0.) |
139 |
|
|
return(MG_EILL); |
140 |
|
|
inv = r2 < 0.; |
141 |
|
|
} else if (r2 != 0. && inv ^ r2 < 0.) |
142 |
|
|
return(MG_EILL); |
143 |
|
|
if (inv) { |
144 |
|
|
r1 = -r1; |
145 |
|
|
r2 = -r2; |
146 |
|
|
} |
147 |
|
|
if ((mat = material()) == NULL) |
148 |
|
|
return(MG_EBADMAT); |
149 |
|
|
printf("\n%s %s %sc%d\n", mat, inv ? "cup" : "cone", |
150 |
|
|
object(), ++ncones); |
151 |
|
|
printf("0\n0\n8\n"); |
152 |
|
|
putv(p1); |
153 |
|
|
putv(p2); |
154 |
|
|
printf("%18.12g %18.12g\n", r1, r2); |
155 |
|
|
return(MG_OK); |
156 |
|
|
} |
157 |
|
|
|
158 |
|
|
|
159 |
|
|
int |
160 |
|
|
r_cyl(ac, av) /* put out a cylinder */ |
161 |
|
|
int ac; |
162 |
|
|
char **av; |
163 |
|
|
{ |
164 |
|
|
static int ncyls; |
165 |
|
|
char *mat; |
166 |
|
|
double rad; |
167 |
|
|
C_VERTEX *cv1, *cv2; |
168 |
|
|
FVECT p1, p2; |
169 |
|
|
int inv; |
170 |
|
|
|
171 |
|
|
if (ac != 4) |
172 |
|
|
return(MG_EARGC); |
173 |
|
|
if (!isflt(av[2])) |
174 |
|
|
return(MG_ETYPE); |
175 |
|
|
if ((cv1 = c_getvert(av[1])) == NULL || |
176 |
|
|
(cv2 = c_getvert(av[3])) == NULL) |
177 |
|
|
return(MG_EUNDEF); |
178 |
|
|
xf_xfmpoint(p1, cv1->p); |
179 |
|
|
xf_xfmpoint(p2, cv2->p); |
180 |
|
|
rad = xf_scale(atof(av[2])); |
181 |
|
|
if ((inv = rad < 0.)) |
182 |
|
|
rad = -rad; |
183 |
|
|
if ((mat = material()) == NULL) |
184 |
|
|
return(MG_EBADMAT); |
185 |
|
|
printf("\n%s %s %scy%d\n", mat, inv ? "tube" : "cylinder", |
186 |
|
|
object(), ++ncyls); |
187 |
|
|
printf("0\n0\n7\n"); |
188 |
|
|
putv(p1); |
189 |
|
|
putv(p2); |
190 |
|
|
printf("%18.12g\n", rad); |
191 |
|
|
return(MG_OK); |
192 |
|
|
} |
193 |
|
|
|
194 |
|
|
|
195 |
|
|
int |
196 |
|
|
r_sph(ac, av) /* put out a sphere */ |
197 |
|
|
int ac; |
198 |
|
|
char **av; |
199 |
|
|
{ |
200 |
|
|
static int nsphs; |
201 |
|
|
char *mat; |
202 |
|
|
double rad; |
203 |
|
|
C_VERTEX *cv; |
204 |
|
|
FVECT cent; |
205 |
|
|
int inv; |
206 |
|
|
|
207 |
|
|
if (ac != 3) |
208 |
|
|
return(MG_EARGC); |
209 |
|
|
if (!isflt(av[2])) |
210 |
|
|
return(MG_ETYPE); |
211 |
|
|
if ((cv = c_getvert(av[1])) == NULL) |
212 |
|
|
return(MG_EUNDEF); |
213 |
|
|
xf_xfmpoint(cent, cv->p); |
214 |
|
|
rad = xf_scale(atof(av[2])); |
215 |
|
|
if ((inv = rad < 0.)) |
216 |
|
|
rad = -rad; |
217 |
|
|
if ((mat = material()) == NULL) |
218 |
|
|
return(MG_EBADMAT); |
219 |
|
|
printf("\n%s %s %ss%d\n", mat, inv ? "bubble" : "sphere", |
220 |
|
|
object(), ++nsphs); |
221 |
|
|
printf("0\n0\n4 %18.12g %18.12g %18.12g %18.12g\n", |
222 |
|
|
cent[0], cent[1], cent[2], rad); |
223 |
|
|
return(MG_OK); |
224 |
|
|
} |
225 |
|
|
|
226 |
|
|
|
227 |
|
|
int |
228 |
|
|
r_ring(ac, av) /* put out a ring */ |
229 |
|
|
int ac; |
230 |
|
|
char **av; |
231 |
|
|
{ |
232 |
|
|
static int nrings; |
233 |
|
|
char *mat; |
234 |
|
|
double r1, r2; |
235 |
|
|
C_VERTEX *cv; |
236 |
|
|
FVECT cent, norm; |
237 |
|
|
|
238 |
|
|
if (ac != 4) |
239 |
|
|
return(MG_EARGC); |
240 |
|
|
if (!isflt(av[2]) || !isflt(av[3])) |
241 |
|
|
return(MG_ETYPE); |
242 |
|
|
if ((cv = c_getvert(av[1])) == NULL) |
243 |
|
|
return(MG_EUNDEF); |
244 |
|
|
if (is0vect(cv->n)) |
245 |
|
|
return(MG_EILL); |
246 |
|
|
xf_xfmpoint(cent, cv->p); |
247 |
|
|
xf_rotvect(norm, cv->n); |
248 |
|
|
r1 = xf_scale(atof(av[2])); |
249 |
|
|
r2 = xf_scale(atof(av[3])); |
250 |
|
|
if (r1 < 0. | r2 <= r1) |
251 |
|
|
return(MG_EILL); |
252 |
|
|
if ((mat = material()) == NULL) |
253 |
|
|
return(MG_EBADMAT); |
254 |
|
|
printf("\n%s ring %sr%d\n", mat, object(), ++nrings); |
255 |
|
|
printf("0\n0\n8\n"); |
256 |
|
|
putv(cent); |
257 |
|
|
putv(norm); |
258 |
|
|
printf("%18.12g %18.12g\n", r1, r2); |
259 |
|
|
return(MG_OK); |
260 |
|
|
} |
261 |
|
|
|
262 |
|
|
|
263 |
|
|
int |
264 |
|
|
r_face(ac, av) /* convert a face */ |
265 |
|
|
int ac; |
266 |
|
|
char **av; |
267 |
|
|
{ |
268 |
|
|
static int nfaces; |
269 |
|
|
char *mat; |
270 |
|
|
register int i; |
271 |
|
|
register C_VERTEX *cv; |
272 |
|
|
FVECT v; |
273 |
|
|
int rv; |
274 |
|
|
|
275 |
|
|
if (ac < 4) |
276 |
|
|
return(MG_EARGC); |
277 |
|
|
if ((mat = material()) == NULL) |
278 |
|
|
return(MG_EBADMAT); |
279 |
greg |
2.2 |
if (ac <= 5) { /* check for surface normals */ |
280 |
greg |
2.1 |
for (i = 1; i < ac; i++) { |
281 |
|
|
if ((cv = c_getvert(av[i])) == NULL) |
282 |
|
|
return(MG_EUNDEF); |
283 |
|
|
if (is0vect(cv->n)) |
284 |
|
|
break; |
285 |
|
|
} |
286 |
|
|
if (i == ac) { /* break into triangles */ |
287 |
|
|
do_tri(mat, av[1], av[2], av[3]); |
288 |
|
|
if (ac == 5) |
289 |
|
|
do_tri(mat, av[3], av[4], av[1]); |
290 |
|
|
return(MG_OK); |
291 |
|
|
} |
292 |
|
|
} |
293 |
|
|
printf("\n%s polygon %sf%d\n", mat, object(), ++nfaces); |
294 |
|
|
printf("0\n0\n%d\n", 3*(ac-1)); |
295 |
|
|
for (i = 1; i < ac; i++) { |
296 |
|
|
if ((cv = c_getvert(av[i])) == NULL) |
297 |
|
|
return(MG_EUNDEF); |
298 |
|
|
xf_xfmpoint(v, cv->p); |
299 |
|
|
putv(v); |
300 |
|
|
} |
301 |
|
|
return(MG_OK); |
302 |
|
|
} |
303 |
|
|
|
304 |
|
|
|
305 |
|
|
r_ies(ac, av) /* convert an IES luminaire file */ |
306 |
|
|
int ac; |
307 |
|
|
char **av; |
308 |
|
|
{ |
309 |
|
|
int xa0 = 2; |
310 |
|
|
char combuf[72]; |
311 |
|
|
char fname[48]; |
312 |
|
|
char *oname; |
313 |
|
|
register char *op; |
314 |
|
|
register int i; |
315 |
|
|
|
316 |
|
|
if (ac < 2) |
317 |
|
|
return(MG_EARGC); |
318 |
|
|
(void)strcpy(combuf, "ies2rad"); |
319 |
|
|
op = combuf + 7; |
320 |
|
|
if (ac-xa0 >= 2 && !strcmp(av[xa0], "-m")) { |
321 |
|
|
if (!isflt(av[xa0+1])) |
322 |
|
|
return(MG_ETYPE); |
323 |
|
|
op = addarg(addarg(op, "-m"), av[xa0+1]); |
324 |
|
|
xa0 += 2; |
325 |
|
|
} |
326 |
|
|
if (access(av[1], 0) == -1) |
327 |
|
|
return(MG_ENOFILE); |
328 |
|
|
*op++ = ' '; /* IES filename goes last */ |
329 |
|
|
(void)strcpy(op, av[1]); |
330 |
|
|
system(combuf); /* run ies2rad */ |
331 |
|
|
/* now let's find the output file */ |
332 |
|
|
if ((op = strrchr(av[1], '/')) == NULL) |
333 |
|
|
op = av[1]; |
334 |
|
|
(void)strcpy(fname, op); |
335 |
|
|
if ((op = strrchr(fname, '.')) == NULL) |
336 |
|
|
op = fname + strlen(fname); |
337 |
|
|
(void)strcpy(op, ".rad"); |
338 |
|
|
if (access(fname, 0) == -1) |
339 |
|
|
return(MG_EINCL); |
340 |
|
|
/* put out xform command */ |
341 |
|
|
printf("\n!xform"); |
342 |
|
|
oname = object(); |
343 |
greg |
2.4 |
if (*oname) { |
344 |
|
|
printf(" -n "); |
345 |
|
|
for (op = oname; op[1]; op++) /* remove trailing separator */ |
346 |
|
|
putchar(*op); |
347 |
|
|
} |
348 |
greg |
2.1 |
for (i = xa0; i < ac; i++) |
349 |
|
|
printf(" %s", av[i]); |
350 |
|
|
if (ac > xa0 && xf_argc > 0) |
351 |
|
|
printf(" -i 1"); |
352 |
|
|
for (i = 0; i < xf_argc; i++) |
353 |
|
|
printf(" %s", xf_argv[i]); |
354 |
|
|
printf(" %s\n", fname); |
355 |
|
|
return(MG_OK); |
356 |
|
|
} |
357 |
|
|
|
358 |
|
|
|
359 |
|
|
do_tri(mat, vn1, vn2, vn3) /* put out smoothed triangle */ |
360 |
|
|
char *mat, *vn1, *vn2, *vn3; |
361 |
|
|
{ |
362 |
|
|
static int ntris; |
363 |
|
|
BARYCCM bvecs; |
364 |
|
|
FLOAT bcoor[3][3]; |
365 |
|
|
C_VERTEX *cv1, *cv2, *cv3; |
366 |
|
|
FVECT v1, v2, v3; |
367 |
|
|
FVECT n1, n2, n3; |
368 |
|
|
register int i; |
369 |
|
|
/* the following is repeat code, so assume it's OK */ |
370 |
|
|
cv1 = c_getvert(vn1); |
371 |
|
|
cv2 = c_getvert(vn2); |
372 |
|
|
cv3 = c_getvert(vn3); |
373 |
|
|
xf_xfmpoint(v1, cv1->p); |
374 |
|
|
xf_xfmpoint(v2, cv2->p); |
375 |
|
|
xf_xfmpoint(v3, cv3->p); |
376 |
greg |
2.2 |
if (comp_baryc(&bvecs, v1, v2, v3) < 0) |
377 |
|
|
return; /* degenerate triangle! */ |
378 |
|
|
printf("\n%s texfunc T-nor\n", mat); |
379 |
|
|
printf("4 dx dy dz %s\n0\n", TCALNAME); |
380 |
|
|
xf_rotvect(n1, cv1->n); |
381 |
|
|
xf_rotvect(n2, cv2->n); |
382 |
|
|
xf_rotvect(n3, cv3->n); |
383 |
|
|
for (i = 0; i < 3; i++) { |
384 |
|
|
bcoor[i][0] = n1[i]; |
385 |
|
|
bcoor[i][1] = n2[i]; |
386 |
|
|
bcoor[i][2] = n3[i]; |
387 |
greg |
2.1 |
} |
388 |
greg |
2.2 |
put_baryc(&bvecs, bcoor, 3); |
389 |
|
|
printf("\nT-nor polygon %st%d\n", object(), ++ntris); |
390 |
greg |
2.1 |
printf("0\n0\n9\n"); |
391 |
|
|
putv(v1); |
392 |
|
|
putv(v2); |
393 |
|
|
putv(v3); |
394 |
|
|
} |
395 |
|
|
|
396 |
|
|
|
397 |
|
|
char * |
398 |
|
|
material() /* get (and print) current material */ |
399 |
|
|
{ |
400 |
|
|
char *mname = "mat"; |
401 |
|
|
COLOR radrgb, c2; |
402 |
|
|
double d; |
403 |
|
|
register int i; |
404 |
|
|
|
405 |
greg |
2.5 |
if (c_cmname != NULL) |
406 |
|
|
mname = c_cmname; |
407 |
greg |
2.1 |
if (!c_cmaterial->clock) |
408 |
|
|
return(mname); /* already current */ |
409 |
|
|
/* else update output */ |
410 |
|
|
c_cmaterial->clock = 0; |
411 |
|
|
if (c_cmaterial->ed > .1) { /* emitter */ |
412 |
|
|
cvtcolor(radrgb, &c_cmaterial->ed_c, |
413 |
|
|
emult*c_cmaterial->ed/WHTEFFICACY); |
414 |
greg |
2.2 |
if (glowdist < FHUGE) { /* do a glow */ |
415 |
greg |
2.1 |
printf("\nvoid glow %s\n0\n0\n", mname); |
416 |
|
|
printf("4 %f %f %f %f\n", colval(radrgb,RED), |
417 |
|
|
colval(radrgb,GRN), |
418 |
|
|
colval(radrgb,BLU), glowdist); |
419 |
|
|
} else { |
420 |
|
|
printf("\nvoid light %s\n0\n0\n", mname); |
421 |
|
|
printf("3 %f %f %f\n", colval(radrgb,RED), |
422 |
|
|
colval(radrgb,GRN), |
423 |
|
|
colval(radrgb,BLU)); |
424 |
|
|
} |
425 |
|
|
return(mname); |
426 |
|
|
} |
427 |
|
|
d = c_cmaterial->rd + c_cmaterial->td + |
428 |
|
|
c_cmaterial->rs + c_cmaterial->ts; |
429 |
greg |
2.7 |
if (d < 0. | d > 1.) |
430 |
greg |
2.1 |
return(NULL); |
431 |
greg |
2.3 |
/* check for trans */ |
432 |
|
|
if (c_cmaterial->td > .01 || c_cmaterial->ts > .01) { |
433 |
greg |
2.1 |
double ts, a5, a6; |
434 |
|
|
|
435 |
greg |
2.6 |
if (c_cmaterial->sided) { |
436 |
|
|
ts = sqrt(c_cmaterial->ts); /* approximate */ |
437 |
|
|
a5 = .5; |
438 |
greg |
2.7 |
} else { |
439 |
|
|
ts = c_cmaterial->ts; |
440 |
greg |
2.6 |
a5 = 1.; |
441 |
greg |
2.7 |
} |
442 |
greg |
2.1 |
/* average colors */ |
443 |
|
|
d = c_cmaterial->rd + c_cmaterial->td + ts; |
444 |
|
|
cvtcolor(radrgb, &c_cmaterial->rd_c, c_cmaterial->rd/d); |
445 |
|
|
cvtcolor(c2, &c_cmaterial->td_c, c_cmaterial->td/d); |
446 |
|
|
addcolor(radrgb, c2); |
447 |
|
|
cvtcolor(c2, &c_cmaterial->ts_c, ts/d); |
448 |
|
|
addcolor(radrgb, c2); |
449 |
|
|
if (c_cmaterial->rs + ts > .0001) |
450 |
|
|
a5 = (c_cmaterial->rs*c_cmaterial->rs_a + |
451 |
greg |
2.6 |
ts*a5*c_cmaterial->ts_a) / |
452 |
greg |
2.1 |
(c_cmaterial->rs + ts); |
453 |
|
|
a6 = (c_cmaterial->td + ts) / |
454 |
|
|
(c_cmaterial->rd + c_cmaterial->td + ts); |
455 |
greg |
2.7 |
if (a6 < .999) |
456 |
greg |
2.1 |
d = c_cmaterial->rd/(1. - c_cmaterial->rs)/(1. - a6); |
457 |
greg |
2.7 |
else |
458 |
|
|
d = c_cmaterial->td + ts; |
459 |
|
|
scalecolor(radrgb, d); |
460 |
greg |
2.1 |
printf("\nvoid trans %s\n0\n0\n", mname); |
461 |
|
|
printf("7 %f %f %f\n", colval(radrgb,RED), |
462 |
|
|
colval(radrgb,GRN), colval(radrgb,BLU)); |
463 |
|
|
printf("\t%f %f %f %f\n", c_cmaterial->rs, a5, a6, |
464 |
|
|
ts/(ts + c_cmaterial->td)); |
465 |
|
|
return(mname); |
466 |
|
|
} |
467 |
greg |
2.3 |
/* check for plastic */ |
468 |
greg |
2.7 |
if (c_cmaterial->rs < .1 && (c_cmaterial->rs < .01 || |
469 |
|
|
c_isgrey(&c_cmaterial->rs_c))) { |
470 |
|
|
cvtcolor(radrgb, &c_cmaterial->rd_c, |
471 |
greg |
2.1 |
c_cmaterial->rd/(1.-c_cmaterial->rs)); |
472 |
|
|
printf("\nvoid plastic %s\n0\n0\n", mname); |
473 |
|
|
printf("5 %f %f %f %f %f\n", colval(radrgb,RED), |
474 |
|
|
colval(radrgb,GRN), colval(radrgb,BLU), |
475 |
|
|
c_cmaterial->rs, c_cmaterial->rs_a); |
476 |
|
|
return(mname); |
477 |
|
|
} |
478 |
|
|
/* else it's metal */ |
479 |
greg |
2.7 |
/* average colors */ |
480 |
|
|
cvtcolor(radrgb, &c_cmaterial->rd_c, c_cmaterial->rd); |
481 |
|
|
cvtcolor(c2, &c_cmaterial->rs_c, c_cmaterial->rs); |
482 |
greg |
2.1 |
addcolor(radrgb, c2); |
483 |
|
|
printf("\nvoid metal %s\n0\n0\n", mname); |
484 |
|
|
printf("5 %f %f %f %f %f\n", colval(radrgb,RED), |
485 |
|
|
colval(radrgb,GRN), colval(radrgb,BLU), |
486 |
greg |
2.7 |
c_cmaterial->rs/(c_cmaterial->rd + c_cmaterial->rs), |
487 |
|
|
c_cmaterial->rs_a); |
488 |
greg |
2.1 |
return(mname); |
489 |
|
|
} |
490 |
|
|
|
491 |
|
|
|
492 |
|
|
cvtcolor(radrgb, ciec, intensity) /* convert a CIE color to Radiance */ |
493 |
|
|
COLOR radrgb; |
494 |
|
|
register C_COLOR *ciec; |
495 |
|
|
double intensity; |
496 |
|
|
{ |
497 |
|
|
static COLOR ciexyz; |
498 |
|
|
|
499 |
greg |
2.4 |
c_ccvt(ciec, C_CSXY); /* get xy representation */ |
500 |
greg |
2.1 |
ciexyz[1] = intensity; |
501 |
|
|
ciexyz[0] = ciec->cx/ciec->cy*ciexyz[1]; |
502 |
|
|
ciexyz[2] = ciexyz[1]*(1./ciec->cy - 1.) - ciexyz[0]; |
503 |
|
|
cie_rgb(radrgb, ciexyz); |
504 |
|
|
} |
505 |
|
|
|
506 |
|
|
|
507 |
|
|
char * |
508 |
|
|
object() /* return current object name */ |
509 |
|
|
{ |
510 |
|
|
static char objbuf[64]; |
511 |
|
|
register int i; |
512 |
|
|
register char *cp; |
513 |
|
|
int len; |
514 |
|
|
|
515 |
|
|
i = obj_nnames - sizeof(objbuf)/16; |
516 |
|
|
if (i < 0) |
517 |
|
|
i = 0; |
518 |
|
|
for (cp = objbuf; i < obj_nnames && |
519 |
|
|
cp + (len=strlen(obj_name[i])) < objbuf+sizeof(objbuf)-1; |
520 |
|
|
i++, *cp++ = '.') { |
521 |
|
|
strcpy(cp, obj_name[i]); |
522 |
|
|
cp += len; |
523 |
|
|
} |
524 |
|
|
*cp = '\0'; |
525 |
|
|
return(objbuf); |
526 |
|
|
} |
527 |
|
|
|
528 |
|
|
|
529 |
|
|
char * |
530 |
|
|
addarg(op, arg) /* add argument and advance pointer */ |
531 |
|
|
register char *op, *arg; |
532 |
|
|
{ |
533 |
|
|
*op = ' '; |
534 |
|
|
while (*++op = *arg++) |
535 |
|
|
; |
536 |
|
|
return(op); |
537 |
|
|
} |